Power transmission.



No. 789,642. PATENTED MAY 9, 1905.

0. WHITE (is A. R. MIDDLETON.

POWER TRANSMISSION.

APPLICATION FILED FEB. 9, 1905.

2 SHEETS-SHEET 1.

l'iweiaivzy No. 789,642. PATENTED MAY 9, 1905. G. WHITE & A. R.MIDDLETON.

POWER TRANSMISSION.

APPLIOATION FILED FEB. 9. 1905.

2 SHEETS-SHEET 2.

Ewe/c2245 V M422malaam q JZW f MW gine with our invention in connectionthere- UNITED STATES Patented May 9, 1905.

PATENT OFFICE.

POWER TRANSMISSION.

SPECIFICATION forming part of Letters Patent No. 789,642, dated May 9,1905.

Application filed February 9,

To (tZZ whom it may concern:

Be it known that we, OI-IARLEs WHITE and ARTI-IUR R. MIDDLETON, citizensof the United States, residing at Baltimore, Maryland, have inventedcertain new and useful Improvements in Power Transmission, of which thefollowing is a specification.

Our invention is designed to provide means whereby an apparatus to bedrivensuch, for instance, as an electric generator may be connected tothe engine without the interposition of a belt, the connection beingmade directly with the fly-wheel of the engine and being of such acharacter and arrangement as will relieve the driven shaft of strain andrelieve it also to a great extent of friction in its bearings. I/Ve havealso sought to provide such an arrangement as will be capable of quickand easy adjustment, whereby the apparatus may be set to work under fullload or may be quickly disconnected from the driving member.

The invention consists in the features and combination and arrangementof parts here inafter described, and particularly pointed out in theclaims.

In the accompanying drawings, Figure 1 is a side view of the main partsof a gas-enwith. Fig. 2 is an end view, partly in section, of Fig. 1.

In carrying out our invention we extend the base 1 of the engine, whichis shown here as a gas-engine, but which is representative of anysuitable form of driving means. The said extension projects laterally inrelation to the engine, as shown at 2, and opposite the fly-wheel. Onthis extension of the base is supported the apparatus to be driven. ehave shown this in the present case as consisting of a dynamo; but itwill be understood that this is representative of any suitable form ofmachine to which it may be desired to transmit power through directconnection with the fly-wheel. The frame 3 of the dynamo is adjustablysupported upon the extension 2 of the base, for which purpose one sideof the frame rests upon a semiframe and into the base 2.

cylindrical bar 4, arranged with its curved 1905. Serial No. 244,960.

surface uppermost to afford a bearing or pivot upon which the frame ofthe machine may have the necessary rocking movement. This side of themachine is held down to the main base 2 by bolts 5, which pass throughlugs 6 on the dynamo-frame and through the pivot-bar 4, their lower endsbeing screwed, as at 7, into the extension 2 of the main base. IVashersS are interposed between the lugs 6 and nuts on the bolts, the saidwasher being slightly yielding in character and consisting of leatherfiber or other suitable material. This pivot or rocking connection, itwill be noticed, is arranged on one side of theverti cal plane passingthrough the driven shaft 9, which in this instance carries the armature.On the other side of this dynamo-frame a rigid support is providedtherefor by means of blocks, one of which is shown at 10, which are inthe form of wedges adjustably secured to the base extension 2 by meansof bolts 11., passing through slots in the said wedgeblocks. This sideof the frame is held down upon the wedge-blocks by means of bolts 12,extending through ears or lugs 12 on the Springs 14 are interposedbetween the upper ends of the bolts and the upper side of the ears, thesaid springs being of stifi material and tending to force the frame ofthe dynamo down hard upon the supporting-pieces or wedge-blocks and toexert a strong controlling influence on the frame to hold it accuratelyin position, the said spring augmenting the natural tendency of theweight of the machine to hold the samein proper relation to the drivingelem out. The shaft 9 of the dynamo has its bearings in the adj ustableframe at the point 15 and 6 and carries atits inner end a heavypulleyorwheel 17, which is adapted to rest at its lower side upon a ring ofleather or other suitable slightly-yielding frictional material 18,riveted to the inner side of the rim of the flywheel, the said rim beingextended, as at 19, and having a side flange to better hold the frictionring or shoe in place. The rivets are indicated at 21. The wheel 17 ismade sufhcientlyheavy, so that it by its ownweight alone will by restingupon the friction shoe or ring 18 give sufficiently strong frictionalcontact for the purpose of causing the armatureshaft to be driven fromthe fly-wheel, and no dependence is had upon the weight of thedynamo-frame in securing the necessary frictional contact. Thedynamo-frame is rocked on its pivot connection to the slight extentnecessary to place the friction pulley or wheel 17 in or out of contactwith the friction drive-shoe or leather 18 by means of a jack-screw 22,bearing at its upper end upon a part of the frame at the right-hand sidethereof, Fig. 1, the lower threaded end of the said screw working in theextension 2 of the base. The screw is turned to adjust the dynamo-frameby a bar or lever 23, engaging in anyone of a series of sockets 2 1 in aboss on the jack-screw. The movement necessary to place thefriction-wheel 17 in or out of contact with the driving element is veryslight, and this is permitted by the construction before described atthe side where the dynamo-frame is pivoted. It will be understood thatthe parts are so adjusted and arranged in respect to each. other thatwhen the friction wheel or pulley 1.7 is in strong frictional contactwith the driving-shoe or friction-band 18 the dynamo-frame will beresting solidly upon its bearings upon the pivot-point 4 and at thewedge or wedges 10, and the weight of this frame is therefore not on theshaft 9, and the weight of this frame is not, therefore, relied upon topress the frietion pulley or wheel 17 against the frictionsurface of thedriving member but, on the contrary, the weight of the friction pulleyor wheel 17 alone is relied upon. to impart the movement to thearmature-shaft. By this arrangement the armature shaft rotates freely inits bearings and is not subjected to the frictional resistance or to thestrain consequent, for instance, upon the pulling effect of a drivingbelt. By the connection described the power to the driven pulley isapplied substantially tangentially thereto and without pulling strain.

It will be noticed, further, that by our arrangement of pivots inrelation to the frame and other parts as above described the drivenshaft 9 will always maintain its horizontal position, and this will notbe affected in any way by tilting the frame so that the surface of thefriction-pulley 17 will throughout its lateral extent always maintainits parallelism with the friction surface or belt 18, with which. it isto engage, and thus there will be no undue wear on the friction-surfacedue to an angular relation between the said surfaces. This effectresults from the fact that the tilting of the frame takes place in adirection transversely to the axis of the dynamo and not in a directionlongitudinally thereof, which would give rise to undesirable effects.

It will be understood that the wedge or wedges 10 may be adjusted out orin, so that the surface of the friction-pulley 17 may be adjusted towardand from the inner side of the rim of the fly-wheel, so that the pulleymay be made to rest upon and engage with the leather band more or lessheavily when in. 'normal position to transmit the full amount of powerdesired to the shaft 9-that is to say, the frame of the dynamo may haveits position of rest slightly altered within the limits of thewedge-surface; but at all times when the frame is let down it will restsolidly upon the surface of the wedge.

e place the leather friction surface or band upon the fly-wheel insteadof upon the periphery of the friction-wheel 17, so as to withstand thewear and prevent it from being burned off, as would result if the saidleather piece or band were placed upon the smaller driven member.

0 claim as our invention 1. In combination with a driving-wheel, adriven wheel or friction-pulley having frictional engagement with thedriving-wheel, a shaft carrying the driven wheel, a frame in which thesaid shaft is supported, a pivotsupport for the said frame at one sidethereof and a rigid bearing for the opposite side of the said frame uponwhich the same bears solidly when the friction-wheels are in contact,substantially as described.

2. In combination the friction drivingwheel, a friction pulley or wheelto contact therewith, a shaft carrying the said pulley, a frame in whichthe said shaft bears, a pivotsupport for the said frame and a fixedbearing upon which the said frame rests solidly when the friction-wheelsare in. contact, whereby the shaft is relieved from the weight of thesaid frame, substantially as described.

3. In combination, the driving and driven wheels or members with theirshafts, the said driven wheel bearing upon the inner side of the rim ofthe driving member, a frame in which the shaft of the driven memberbears, means for adjusting the frame toward and from the axis of thedriving member while maintaining the parallelism of the driven s'h aftto the said axis and a fixed bearing upon which the said frame restssolidly when the friction-wheels are in contact, whereby the shaft isrelieved from the weight of the said frame, substantially as described.

1. In combination, the driving and driven wheels, a shaft carrying thedriven wheel, frame in which the said shaft bears, a pivotsupport forthe said frame and adjustable wedge means upon which the said framefinds a solid bearing, substantially as described.

5. In combination the driving and driven friction-wheels, a shaftcarrying the driven wheel, a frame in which the said shaft bears, apivot-bearing for the said frame and a ackscrew for adjusting the frame,sulmtantially as described.

6. In combination the driving and driven wheels, a shaft for the latter,a frame in which the said shaft bears, a pivot for the said frameconsisting of the bar or member upon which the frame rests, a boltpassing through a part of the frame and through the said pivot-bar andyielding means between the frame and a part of the bolt, substantiallyas described.

7. In combination the driving and driven wheels, a shaft for the drivenwheel, a frame in which the said shaft bears, having a pivotbearing andmeans for holding the opposite end of the said frame consisting of abolt passing into a art thereof, and a spring surrounding the be t andpressing upon a part of the pivoted frame, substantially as described.

8. In combination, a drive-wheel, a friction pulley or wheel to contacttherewith, a shaft carrying the said driven wheel, a frame in which thesaid shaft bears and means for adjusting the said frame to remove itsweight from the said shaft, substantially as described. 9. Incombination, the driving and driven wheels with their shafts, the saiddriven wheel bearing upon the inner side of the rim of the drivingmember, a frame in which the shaft of the driven member bears and meansfor adjusting the said frame toward and from the axis of the drivingmember while maintaining the parallelism of the driven shaft to the saidaxis, substantially as described.

In testimony whereof we affix our signatures in presence of twowitnesses.

CHARLES WHITE. ARTHUR R. MIDDLETON. Witnesses MURRAY HANSON, S. E.SWEENY.

